8o The Ottawa Naturalist. [June 



Malmgreni Ands., is now generally refered to A. ef^usa as '^^ forma 

 depaxiperaia. " 



While thus A. /"/7w and A. poidulina are. the only species 

 recognized by Grisebach, seven others have been described pre- 

 viously by Ruprecht, but merely refered to as synonyms in Flora 

 Rossica ; they were collected on the island Kolgujew and on the 

 Russian coast near Kambalnitza and Bjelaja. Judging from the 

 diagnoses and figures in the work of Ruprecht, cited above, it 

 seems very unsafe to include all these species under A. fnhxi and 

 A. pendulina, and we have thought it worth while to insert his 

 diagnoses in this paper, in order to give as complete as possible 

 a representation of the genus. These seven species of Ruprecht 

 are described as follows : 

 Poa {Arctophila) defiexa. 



Differt a Poa s. Arctophila Laestadii ( Glyceria pendulina 

 Laest. e loco classico ! et Herb, norm, Suec. !) spiculis latioribus, 

 flosculis majoribus, acutioribus, radiis paniculae rigidioribus et 

 culmo plerumque duplo tenuiori. 

 Poa {Arctophila) trichoclada. 



Proxima P. Lcestadii, sed differt habitu triviali, panicula den- 

 siflora, forma spicularum magis ovata, flosculis infimis longioribus, 

 aliter coloratis ; semiverticillis radiorum infimorum vix callosis, 

 densius floriferis. A. Poa defiexa diversa : radiis paniculaj minus 

 strictis, fere squarrosulis, culmo (et quoque rachi) intra panicu- 

 1am triplo crassiore, ultra lineam tere lato ; spiculis bilinealibus 

 et minoribus, subtrifloris et c. 

 Poa [Arctophila) fulva Trin. 

 Poa [Arctophila) la ti flora. 



Habitus P. fulvcB, sed differt statura minore 6-9 poll., panicula 

 rigidiore, apice non nutante ; spiculis latioribus, basi minus 

 attenuatis, apice multo obtusioribus (ob flosculos fere truncatos) 

 trifloris tantum, hinc etiam brevioribus, vix ultra i^ lin. longis. 

 Poa [Arctophila) paxilantha. 



Similis quidem P. trichocladcB et deflexce, sed radii infimi 

 magis contracti, a basi fere spiculis obsessi, non refracti. Culmus 

 15-20 poll., crassus, nodis 3 exsertis ; folia plana ut in anteceden- 

 tibus ; spiculce variegate, 3 lin., 4 florse, flosculus infimus i J^ 

 lin., superiores duo remotiusculi ; panicula'erecta. 



